Microhardness and toughness of the TiN coating prepared by reactive plasma spraying

被引：72

作者：

Feng, WR

Yan, DR

He, JN

Zhang, GL

Chen, GL

Gu, WC

Yang, S

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

[2] Hebrew Univ Jerusalem, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2005年 / 243卷 / 1-4期

关键词：

TiN coating; reactive plasma spraying; fracture toughness;

D O I：

10.1016/j.apsusc.2004.09.064

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The in-situ titanium nitride (TiN) coating with a great thickness was reactive plasma sprayed in a nitrogen-containing environment. The microhardness of the coating was measured, and the indentations were used to determine the fracture toughness of the coating. The toughening mechanism was characterized by analyzing the SEM morphologies of TiN coating's fracture surfaces. Results show that the coating possesses a high hardness and toughness. The average hardness of the coating is 1200H(V) (100) (g); and the fracture toughness (K-IC) of it is 4.51 MPa center dot m(0.5). The cross-section of the TiN coating shows an obvious phenomenon of indentation size effect (ISE). The toughening mechanisms of the coating are crack deflection and pores, etc. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：204 / 213

页数：10

共 13 条

[1] Titanium carbide-iron composite coatings by reactive plasma spraying of ilmenite [J].